本文对 3个株系松材线虫和 3个株系拟松材线虫进行了扫描电镜结构的比较。结果表明 ,雌虫尾突的特征、雌虫尾部纵脊的数目以及雄虫尾翼的结构是松材线虫和拟松材线虫分类的主要特征。其中雌虫尾部纵脊的特征是过去没有描述过的 ,这一发现为这两类线虫的分类鉴定提供了新的依据 In this paper, three strains of Bursaphelenchus xylophilus and three strains of Bursaphelenchus xylophilus were compared by scanning electron microscopy. The results showed that the characteristics of the female caudate process, the number of the longitudinal tail of the female and the structure of the male tail were the main characteristics of the classification of the pine wood nematode and the pine wood nematode. Among them, the trailing longitudinal ridge of females has not been described in the past. This finding provides a new basis for the classification and identification of these two species of nematodes